adversary

His political adversaries would like to discredit him.

他的政敌想破坏他的声誉。

The dictionary meaning of the term "opponent" is "adversary"; "enemy "; "one who opposes your interests".

字典里“对手”一词的意思是“敌手”；“敌人”；“与你的利益相悖的人”。

Certain drugs, however, can produce serious adversary actions.

然而，某些药物会导致严重的对抗行动。

These two parties have adversary politics.

这两个党派的政见是敌对的。